Re: looping problem, <xsl: for-each>??

Hi Wendell,
  I was able to generate numbering 1,2,3,4.. 

I applied your suggestion to store an intermediate
tree fragment in a variable, and then converting the
variable into a nodeset. By iterating the nodeset, I
am able to generate numbers 1,2,3,4.. 

The XSL is --

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xalan";>
<xsl:output method="xml" version="1.0"
encoding="UTF-8" indent="yes"/>

<xsl:key name="x" match="/rss/channel/item"
use="category"/>
<xsl:template match="/">
  <xsl:variable name="treeFrag">
    <rootelem>
      <xsl:for-each select="rss/channel/item">
        <xsl:if test="generate-id(.) = generate-id(key('x',
category)[1])">
          <h1>                                              <xsl:value-of 
select="category"/>
          </h1>
          <xsl:for-each select="key('x', category)">
            <desc>
              <xsl:value-of select="description"/>
            </desc>
          </xsl:for-each>
        </xsl:if>
      </xsl:for-each>
    </rootelem>
  </xsl:variable>
                
  <xsl:for-each
select="xalan:nodeset($treeFrag)/rootelem/desc">
    <xsl:if test="name(preceding-sibling::*[1]) =
'h1'">
      <h1>
        <xsl:value-of select="preceding-sibling::*[1]" />
      </h1>
    </xsl:if>   
    ITEM<xsl:value-of select="position()"/>
<xsl:value-of select="."/>
  </xsl:for-each>
</xsl:template>

</xsl:stylesheet>

In the above solution, though numbers are getting
generated properly, but to output <h1> tags at the
right place, I had to write a slightly complex syntax
* xsl:if test="name(preceding-sibling::*[1]) = 'h1'" *

I have used the Xalan nodeset extension function.  The
syntax -- xalan:nodeset, can be replaced by
vendor:node-set for a different XSLT processor..

Would also like to have your comments if any to
improve the above XSL.

This _also_ completes my answer..

Regards,
Mukul


--- Wendell Piez <wapiez(_at_)mulberrytech(_dot_)com> wrote:

The two-pass solution would simply be:

pass 1: sort and create output
pass 2: number

The node-set-extension-based solution would be the
same, except that pass 1 
would be bound to a variable, then that variable's
value (a 
result-tree-fragment) changed to a node-set (in a
second variable 
declaration); then you'd apply templates to that
node set to get the numbering.

I'd go into more detail but I'm kinda swamped at the
moment.... :->

Cheers,
Wendell

======================================================================

Wendell Piez                           
mailto:wapiez(_at_)mulberrytech(_dot_)com
Mulberry Technologies, Inc.               
http://www.mulberrytech.com
17 West Jefferson Street                    Direct
Phone: 301/315-9635
Suite 207                                         
Phone: 301/315-9631
Rockville, MD  20850                                
Fax: 301/315-8285

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in SGML and XML

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